Boxplots of high-sensitivity troponin T changes after baseline per group over time. Results are shown per group: nitrous oxide/B-vitamins; nitrous oxide/placebo, and reference group (no nitrous oxide) at four time points: end of surgery (EOS), postoperative days (POD) 1, 2, and 3 (POD 1, POD2, and POD 3). No statistically significant difference between any group at any time point were observed. Boxes represent the interquartile range (25 and 75% percentile); the line represents the median and the whiskers the Tukey distance (1.5 times the interquartile range).